19955601

素因数分解:

$3^2\times {\mathrm{61}}^1\times {\mathrm{163}}^1\times {\mathrm{223}}^1$

素因数の和:453

約数の個数: 24

約数和(自身を含む): 29609216

約数和(自身を除く): 9653615

約数列:

[1, 3, 9, 61, 163, 183, 223, 489, 549, 669, 1467, 2007, 9943, 13603, 29829, 36349, 40809, 89487, 109047, 122427, 327141, 2217289, 6651867, 19955601]

約数ペア:

[(1, 19955601), (3, 6651867), (9, 2217289), (61, 327141), (163, 122427), (183, 109047), (223, 89487), (489, 40809), (549, 36349), (669, 29829), (1467, 13603), (2007, 9943)]